Packing unit



' mm? s- R 1,742,23.

' PACKING UNIT Filed Juna 13, 1927 v r ll-4 Patented Jan. 7, 1930 UNITEDSTATES PATENT OFFICE SOLOMON M. SAGER, OF CHICAGO, ILLINOIS, ASSIGNOR TOTHE SAGER PEN CORPORA- TION, A CORPORATION OF DELAWARE PACKING UNITApplication filed June 13,

This invention relates to an improved form of a packingunit and oneprimarily adapted for convenient use ina fountain pen of the plungerfilling type wherein said packing is conveniently positioned for theplunger rod to frictionally project therethrough so that when theplunger is withdrawn from the fountain pen barrel preparatory to fillingthe barrel with ink the plunger rod is thoroughly wiped and dried,thereby affording an arrangement whereby the fingers or hands of aperson operating the plunger to fill the fountain pen will not becomestained or soiled as has been the invariable result when filling l5plunger type fountain pens which heretofore have been used.

It is'an object of this invention to provide an improved packing unitadapted to be inserted within the barrel of a fountain pen or 2 the likefor the purpose of permitting the plunger stem used in the filling ofthe fountain pen barrel to be thoroughly wiped and dried when theplunger stem is withdrawn from the barrel of the pen preparatory to adownstroke filling operation.

It is also an object of this invention to provide a packing unit forusein connect on with a lunger rod or the like, said packing unitembracing a metal retaining shell having a plurality of layers ofdifferent kinds of material positioned therein and coacting with theplunger stem to wipe and dry the same as the plunger rod is movedthrough" the packing unit.

It is a further object of this invention to provide a plunger housingwith a removable packing unit through which a plunger stem is adapted tobe moved to cause the stem to be thoroughly wiped and dried during itsmove- -nient through the packing unit by the action of adjacently disosedlayers of cork andof different kinds 0 rubber arranged in apredetermined relation. 1

It is an important object of this invention to provide a plunger stem orthe like with a packing unit consisting of a metal retaining shell orsleeve for holding a plurality of laycrs of hard rubber separated bythin layers of cork and a layer of'soft rubber impregnated with graphiteor the like.

.5 is an improved 1927. Serial No. 198,461.

Other and further important objects of this invention will be apparentfrom the disclosures in the specification and the accompanying drawings.

This invention (in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure 1 is a front elevation of a fountain pen of the plunger typeequipped with a packing unit embodying the principles of this invention.

Figure 2 is an enlarged fragmentary longitudinal section of one end ofthe fountain pen barrel taken on line II-II of Figure 1 and showingparts in elevation.

Figure 3 is a transverse sectional view taken on line IIIIII of Figure 2illustrating one end of the packing unit.

Figure 4 is a longitudinal section of the packing unit taken on lineIVIV of Figure 3 showing a fragmentary portion of a plunger rodassociated with the packing unit.

As shown on the drawings:

The reference numeral 1 indicates a fountain pen barrel provided with aremovable closure cap 2 equipped with a clip 3. The fountain pen is ofthe plunger filling type and has slidablydisposed ax-ially therein aplunger rod or stem 4 the outer end of which projects through a closureor retaining plate or disk 5 which is removably threaded into a reducedneck or section 6 of the fountain pen barrel. Engaged on the outer endof the plunger 4 is a plunger knob or handle 7 provided with a knurledrim section 8 to facilitate gripping of the plunger knob. The plungerknob 7 is secured to the end of the plunger rod 4 by 'means of a pin 9or any other suitable means. Provided in one end of the fountain penbarrel 1 is a shoulder 10 formed byhollowing out the reduced end 6 ofthe fountain pen barrel to afford a chamber or compartment 11 within thebarrel 1 to the inside of the retaining ring 5. Mounted within thefountain pen barrel chamber 11 with one end seated against the shoulder10 and the other end engaged by the retaining rin packing unit throughwhic the plunger rod or stem 4 projects. The im proved packin unitcomprises a metal sleeve or shell 12 havlng rigidly pressed or engagedin the inner end thereof a hard rubber packing disk or plate 13 providedwith a central opening to permit movement of the plunger rodtherethrough. Mounted in the metal packing sleeve 12 adjacent the innerface of the hard rubber packing disk 13 are four thin plates or disks 14made of cork and each provided with a central opening to permit movementof the plunger rod therethrough. The plurality of disks or plates ofcork are provided so that a plurality of spaced edges will be providedfor coaction with the surface of the plunger rod 4 to wipe the sameduring the outward movement of the plunger rod through the packing unitpreparatory to a downstroke filling operation of said plunger rod whenit is desired to fill the fountain pen barrel with ink. Mounted Withinthe packing sleeve 12 adjacent the innermost cork disk 14 is a thinnerhard rubber packing disk 15 provided with a. central opening to permitmovement of the plunger rod therethrough. Also positioned within thepacking sleeve 12 to the outside of the intermediate hard rubber packingdisk 15 is a disk or ring 16 constructed of soft rubber impregnated withgraphite or the like. The soft rubber packing ring or disk 16 is held inplace by an outer end packing disk or plate 17 constructed of hardrubber and provided with a suitable central opening to permit passage ofthe plunger rod 4 therethrough.

The different layers of packing are securely pressed within the metalpacking sleeve or shell 12 to afford a complete removable packing unitthrough which the fountain pen lunger rod 4 is adapted to be slidablymoved y a person engaging the knurled plunger rod or handle 7 whichnormally seats against the reduced end 6 of the fountain pen barrel,- asclearly illustrated in Figures 1 and 2 of the drawings.

To fill the fountain pen the cap 2 is removed from the barrel 1 and thepen point is engaged within the neck of a bottle of ink or the like andthe plunger rod- 4 is pulled outwardly by means of the knurled knob orhead 7, thereby causing any ink remaining in the barrel to bedischarged'into the ink bottle. As the plunger rod 4 is pulled outwardlythe rod slides through the packing unit and is first acted upon by theinner hard rubber disk 13 which tends to remove the greater portion ofink adhering to the plunger rod. After passing through the hard rubberpacking disk 13 the plunger successively passes through the four adjacently disposed cork washers or plates 14 which act to remove themajority of any ink still remaining on the I plunger. The plurality ofcork washers or plates 14 are provided so that there will be more corkedges acting on the outer surface of the plunger rod to perform aplurality of wiping actions on the surface of the plunger rod. Afterpassing through the cork washers or plates 14 the plunger 'passesthrough the intermediate hard rubber or Washer plate 15 and then throughthe soft rubber disk 16 which is impregnated with graphite so that thesoft rubber plate will act as a means for wiping the partially cleanedsurface of the plunger substantially dry before the plunger rod passesthrough the outermost hard rubber disk or washer 17. By using theimproved packing unit it will be noted that the projecting end of theplunger rod which extends beyond the closure plate 5 holding the packingunit in position is thoroughly wiped or scraped to not only remove theink therefrom, but is also wiped dry by the soft rubber disk or washer16 so that a person operating the plunger rod to fill the fountain penbarrel 1 with ink may readily engage or touch the projecting end of theplunger rod 4 without any danger of staining the fingers with inkadhering to the plunger rod which heretofore has been one of thegreatest drawbacks and inconveniences in connection with the use ofplunger type fountain pens. After the plunger has been pulled outwardlyfrom the fountain pen barrel 1 the pen point is projected into the inkand the plunger is pushed inwardly until the inner end of the plungerknob or head 7 seats against the reduced outer end of the fountain penbarrel, as

illustrated in Figures 1 and 2. The barrel 1 of the fountain pen is thusfilled with ink on the inner or downstroke of the plunger rod 4. It willthus be noted that an improved packing unit has been devised for use inconnection with fountain pen plunger rods or the like for the purpose ofthoroughly removing any liquid from the portion of the plunger rod whichis pulled through the packing unit, and, furthermore, serves to wipe theprojecting portion of the plunger rod dry so that the plunger rod may beoperated by an individual-without anydanger of soiling ones hands duringthe operation. While the packing unit has been described in connectionwith a plunger type fountain pen it will, of course, be understood thatsaid packing unit may be used in different sizes and used in connectionwith plunger rods, valve'stems, or similar types of mechanisms of anydesired size having a s'lidable rod or stem which requires wiping anddrying. The packing unit also affords not only the wiping and dryingarrangement for the plunger rod, but also acts as a packing to provide atight non-leaking joint around the plunger rod.

I am aware that many changes may be made, and numerous details ofconstruction may be varied through a wide range without departing fromthe principles of this invention, and I therefore do not purposelimiting the patent granted hereon, otherwise than necessitated by theprior art.

I claim as my invention:

A packing unit of the class described comprising a shell, a pair ofcentrally apertured hard rubber disks securely mounted within saidshell, a centrally apertured impregnated soft rubber disk mounted Withinsaid shell adjacent one of said hard rubber disks, a plurality ofcentrally apertured thin cork disks mounted adjacent one another Withinsaid shell With the outermost cork disk contacting-the other of saidhard rubber disks, and a centrally apertured hard rubber intermediatedisk mounted Within said shell between theksoft rubber disk and theinnermost cork dis In testimony whereof I have hereunto subscribed myname at Chicago, Cook county,

Illinois.

SOLOMON SAGER.

